Limit the number of tasks that can shuffle for cpu rebalance at once #1751
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baconmania
reviewed
Mar 1, 2018
| @@ -234,7 +246,12 @@ public void runActionOnPoll() { | |||
| if (slaveOverloaded && configuration.isShuffleTasksForOverloadedSlaves()) { | |||
| possibleTasksToShuffle.sort((u1, u2) -> Double.compare(u2.getUsage().getCpusUsed(), u1.getUsage().getCpusUsed())); | |||
| for (TaskIdWithUsage taskIdWithUsage : possibleTasksToShuffle) { | |||
| if (cpuOverage <= 0 || shuffledTasks > configuration.getMaxTasksToShuffleForCpuOverage()) { | |||
| if (requestsWithShuffledTasks.contains(taskIdWithUsage.getTaskId().getRequestId())) { | |||
| LOG.debug("Request {} laready has a shuffling task, skipping", taskIdWithUsage.getTaskId().getRequestId()); | |||
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Going to merge this one and start other changes in a new PR |
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Add a cluster-wide limit as well as a per-slave limit for how many tasks we can shuffle around at once